Tried DSRT yesterday. I'm a fan.

[oceans]

Hmmm, yeah, it's difficult to decide which way to focus on it, I certainly felt that way and asked Kevin what the chances were to get a 20mm rope runner made up, still waiting a year later so I ran out of breath. I'm more interested in using the highline of TRT and using pendulum climbing ala DdRT rather than dedicated DSRT, I've done a full circle since Oceans last came over.

My rope is Sirius 500, a marine rope made by Teufelberger and static as all hell.

I'm writing this at lunch time, we have a job in Morioka, you remember the big tsunami 5 years back, well a portion of the hillside slid onto the train tracks and we are removing big Sweet Chestnut trees, the thing is though there are lots and lots of targets that are taking data about the integrity of the slope so it has been a riggers dream/nightmare job. Anyway, just this morning I used the TRT highline to great effect on a really long dead branch that was right over a sensor. The rigging rope redirect setting was easy enough, bang on the COG but I couldnt weight the branch and a re-direct would have put me in the wrong place for cutting. DSRT would have worked too but I only needed it for 1 cut on a day long tree.

I'll totally agree that evaluating the useage of a single redirect can lead to all sorts of gear decisions. If I'm wishing for DSRT for a tiny potion of a larger picture, I go for the thimble Prussik and potentially a quick and dirty working end on the fall of my lanyard. Usually I can just move the thimble that lives on the front of my lanyard and make it an adjuster on the back end. Works a treat in a pinch.

 

[the.schultz.effect]

There is real beauty in flipping things over, I'm convinced that the symmetry in Eric's DSRT system has a deeper resonance than function and this of course leads into asymmetrical ideas, 2 systems become 1 system become 1 and half systems and reverting, the constant change through desire of movement. But playing so much with systems I am drawn back to the lightweight 8mm in TRT....and that it is effectively a loop that can be turned upside down lends itself to many rigging puzzles.
I can only see a reason for such large TRT rope (11mm) if you want to kill many birds with one stone, ie hit SRT, DSRT and TRT all in one go but for me that loses something of the freedom that 8mm TRT gives.

i just realized it was you, Mr. Poynter. my hats off to you sir. i would luv to see your system in action, it sounds like you have it dialed in to perfection. now i just have to figure out a remotely settable, retrievable redirect to Japan

 

[the.schultz.effect]

Haha! An inverted OT. That's great! How's the drag on that system with 2 Wrenches?

it's probably what allows it to work with just one knot i tried two independent knots and it was too hard to tend and release

 

[tiago]

Nice post, Dusty. ...and a great question. I've done a considerable amount of DSRT, and opinion may just be mine, alone.

When suspended in a DSRT system from (what I call) "asymmetrical redirects", I try to focus on one rope alone to ascend. I may even release the other until I'm close to plumb in the one I want to climb. Once I've gained the height I wanted, I pull the other system in by hand and tend that slack as I go.

I've found it doesn't matter how many bridges you have, and how the kit is connected, because once your ropes are coming to you from different angles, if you try to ascend a line that isn't plumb, your body will fall to the underside of the rope angle, and the rope is very unlikely to flow well through the foot ascender.

What I like best for DSRT is two Bulldog Bones (each with the RE Nano Swivel mod), sharing a Delta Screw Link, connected to a RE Rotator L swivel, connected to a single bridge. This is the only way I found I could have complete mobility and freedom to orient for work positioning. It just happens to be very clean, too.

These mechanical devices we have access to these days offer a seemingly built in safety since they slip when the load is close to double the climber weight. This is important in a DSRT system with asymmetrical redirects, because it's nearly impossible to go beyond the 120 degree critical angle.

This is a point at which loads dramatically increase as the interior angle between the two climbing systems becomes greater than 120. The redirect would experience the force in compression, but the climbing device experiences it as if you began to weigh considerably more. Again, they will slip, so you can't even go there. Kinda cool.

That's my $0.02 worth of verbal musing.

More importantly, have fun with your DSRT climbing. I'm really in love with that technique.

Cheers.

Hello! This is great. Can you share if it is still your preferred setup (for DSRT)? Thanks in advance.

 

[oceans]

Hello! This is great. Can you share if it is still your preferred setup (for DSRT)? Thanks in advance.

When the need is apparent for DSRT (probably more appropriate to call it DSRS at this point), I still think the dual Compact Bulldog Bone system is the most user friendly design. My rigging brother, @SoftBankHawks calls it the “helicopter belay”. He made a great video of it in use.